重比重布比卡因单侧腰硬联合麻醉在老年腹股沟疝手术中的应用
중비중포비잡인단측요경연합마취재노년복고구산수술중적응용
The Weight Specific Gravity Bupivacaine in Combined Spinal and Epidural Anesthesia in Unilateral Inguinal Hernia in the Elderly
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